首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
Everyone has suffered from headaches, but【C1】______recently medical researchers were not certain what caused them. Blew research
Everyone has suffered from headaches, but【C1】______recently medical researchers were not certain what caused them. Blew research
admin
2013-02-09
73
问题
Everyone has suffered from headaches, but【C1】______recently medical researchers were not certain what caused them. Blew research is giving us more【C2】______about two common types of headaches: tension headaches and migraine headaches. The most painful【C3】______are migraines, which【C4】______about eight to ten percent of the time and are【C5】______as a very sharp, throbbing pain. Most heada ches,【C6】______, are tension headaches. They are unpleasant, of course, but not as painful as the migraine【C7】______. Usually they are experienced as a(n)【C8】______ache on both sides of the head or in the back or forehead. These headaches are caused by the tightening of the muscles of the head and neck, which【C9】______causes the blood vessels to narrow, making it difficult for the brain to receive the oxygen(water, nutrition, blood) it needs. This is what causes the pain. Migraines,【C10】______, result from the blood vessels in the brain enlarging, causing swelling in the brain. This swelling results in terrible pain. The headache may last for a day or two and【C11】______the individual sick and weak. Migraines are apparently【C12】______, because several individuals in the same family usually have them. Doctors believe that the brains of these individuals【C13】______in unusual ways to small problems, like failing a test or eating unwisely.【C14】______there are warning【C15】______before a migraine occurs, such as spots appearing before the eyes or a sick feeling in the【C16】______. If the person takes medicine or caffeine as soon as he or she begins to feel the headache coming【C17】______, it can be【C18】______. Caffeine and the medicine, called ergot, cause the blood vessels to narrow. Once the headache【C19】______, sleep and a cool【C20】______on the head may help.
【C19】
选项
A、acted
B、started
C、has started
D、has acted
答案
C
解析
此句意为“一旦疼痛发生”,用现在完成时较合适,另外,start要比act“行动”更符合句意,所以此处用has started。
转载请注明原文地址:https://kaotiyun.com/show/eod4777K
0
考研英语一
相关试题推荐
Accordingtothetext,theapeshouldbeconsideredforcertainjobsAccordingtotheauthor,breedingsuper-apeswouldbe
Whatmaybetheattitudeofmanypublic-serviceworkerstowardsthestrategyofBlair’sgovernment?Whenmentioning"thesometh
Productivityistheyardstickbywhichsocioeconomicrevolutionsaremeasured.Plowsinitiatedtheagrarianrevolutionbygreatl
HenryKissingermaybethemostsuccessful,certainlythemostflamboyant,SecretaryofStatetoholdthatofficeinmoderntime
Somepeopleexpectedshort-terminterestratestojumpsoonbecausethey______.WecanlearnfromthetextthattheAmerica’s
SinceOctober1,ithasbeenillegalforanybusinesstodiscriminateagainstdisabledpeople,eitherduringtherecruitmentpro
Forthefirsttimeindecades,doctorshavebegunmakingmajorchangesinthetreatmentoflungcancer,basedonresearchprovin
Untilrecently,thecommonfactorinallthescienceusedtofigureoutifapieceofartwasforgedwasthatitwasconcernedw
Whohaverecentlylistenedtothestoryinthefirstparagraphofthetext?Accordingtothelastparagraph,theGeneralAssemb
Whohaverecentlylistenedtothestoryinthefirstparagraphofthetext?Accordingtothetext,emptyplatitudesmightbefo
随机试题
Theywereprettypoorbutmostoftheirfriendswereeven________.
下列作家的词表现出豪放清旷风格的是()
治疗一氧化碳中毒患者最佳的氧疗方式
在尸检剥皮过程中,应注意检查的内容不包括()。
低温季节混凝土施工时,可提高混凝土拌合料温度,不可直接加热的是()。
根据以下材料,回答下列小题。根据资料,下列表述中正确的一项是:
家长、学生和雇主没有参与院校管理的当然权力,但却有对高等院校社会责任的问责权。高等教育大众化,大学经费来源多元化,导致家长、学生以及雇主都成为高等院校的利益相关者。对于家长和学生而言,他们对高等院校责任的问责,更多在学生能否获得良好的学习经历和学习体验,学
国家对集体经济的基本政策是()。
定义学生选修课程的关系模式:SC(S#,Sn,C#,Cn,G)(其属性分别为学号、姓名、课程号、课程名、成绩)。则对主属性部分依赖的是
A、Itiscomplex.B、Itistime-consuming.C、Itisinteresting.D、Itisquiteeasy.D原文中,女士说,有机婴儿食物做起来很容易,只要把甘薯和土豆以及绿色蔬菜捣成泥状就可以了。因
最新回复
(
0
)